Recent content by joshuam

Re: Hayward H100ID sometimes ignites, doesn't stay lit - gas New regulator makes no difference on the output side - so I'm concluding that the problem is with the gas valve, somehow. I'll update this post with more later on, as it may be useful to people who are exploring issues like this. If...

Re: Hayward H100ID sometimes ignites, doesn't stay lit - gas Spec for this unit is, IIRC, 3-13" WC with propane, 13" being the hard maximum. The 11" is a nominal, and used for distance/diameter estimates of the supply tube in the manual, but the device is designed to work at a theoretical 3"...

Hayward H100ID Propane. Ignites occasionally, but doesn’t stay lit. Has worked for ~1 year no big problems, just the usual annoyances. All switches/safeties are functional, and not jumpered. Heater correctly spins up fan and calls for heat. Propane begins supplying. However, ignition does...

FWIW, this heater runs fine on 5# cans. I get about 5 hours out of each one. One is more than enough to heat all 500 gallons up to 104 or so, and then each can lasts a week or two. Initial heating will freeze out a can, so I swap part way through to allow it to warm back up. In case this is...

Thanks for that idea! As it turns out, in 60 degree temperatures, a cylinder is plenty of surface area for 100kbtu (though the parallel hookup was my next step - where did you find the hardware to do that? What's it called?). At 50 deg, it does freeze up eventually, but it will at least start...

Thanks for the very informative reply. Most of the people I've talked w/ about this don't really seem to understand what gas systems *do*.

Great! Surface area is what I was looking for; it's not strictly the volume of the tank, but its greater diameter that makes the difference, then. So even a 20gal tank is not going to work; the larger volume is insignificant. It's that the 100 gal tank is horizontal and has more exposed liquid...

Thanks. Understood; 100 gal tank. I'm still not clear how a larger tank produces the needed pressure. I think that perhaps not enough propane can vaporize quickly enough within the tank to maintain the pressure? Anyway, thanks again. I really only intended to test the heater with this small...

Thanks a million for the response. I think you're right. I'm trying to understand, though, how that is the case, given what I'm seeing. Pre-manifold, I have 13.4" WC. That seems like enough pressure. Is it that, due to the lower level of gas in the can, I'm getting less overall flow through...

I should mention that I checked the blower's grey hose and it's fine - in any case, gas is being dumped into the heater so it's not any of the safety devices - as I understand it, if any of them were not working, the whole shebang would fail to turn on.

I've got a propane heater not igniting and I would sorely appreciate any advice. My troubleshooting, with only one concern, suggests that it should ignite! I have a Hayward H100ID Spa/Pool Heater, Propane. It’s hooked up to a propane canister (not tank) via a 100,000 btu regulator. I’ve...